SystemSaveData: Added a TODO to move it to the NAND.

Maybe sometime when we actually implement that

src/core/file_sys/archive_systemsavedata.h

@@ -14,7 +14,9 @@
 
 namespace FileSys {
 
-/// File system interface to the SaveData archive
+/// File system interface to the SystemSaveData archive
+/// TODO(Subv): This archive should point to a location in the NAND, 
+/// specifically nand:/data/<ID0>/sysdata/<SaveID-Low>/<SaveID-High>
 class Archive_SystemSaveData final : public DiskArchive {
 public:
     Archive_SystemSaveData(const std::string& mount_point);